My wife recently got me a new travel coffee mug and it’s the best one I have ever had as far as keeping the coffee really really hot for a long time. It is very thin walled and I just don’t understand how the heat does not transfer to the outside surface of the cup.
In: 24
Vacuum between the inner and outer walls. Meaning, your coffee can’t cool down via conduction(like when you touch something hot) or convection(like when the blow dryer heats up your hair). Only method of heat transfer left is radiation , and your coffee is not the temp of a neutron star, so the coffee’s radiation and therefore it’s overall heat transfer, happen much more slowly. This keep the coffee hot.
Heat transfer is my jam.
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